Tripod for supporting lighting-fixtures.



E. A; EMERYL I TRIPOD FOB SUPPORTING LIGHTING FIXTURES.

APPLICATION FILED AUG. 26, 1907.

901 795- T I Patented Oct. 20, 1908.

are. 901,795.

citizen of the ing the preferred UNITED STATES PATENT oFFrcE.

EDWIN A. EMERY, OF GALVA, ILLINOIS.

' Tarpon Ion sorron'rinc LIGHTING-(FIXTURES.

' Specification t Letter: Batent.

Patented Oct; 2c, 1008.

Application filed August 26, 1907. we no. 390,201."

To all whom it may concern:

Be it KIIOWII that I, EDWIN A. EMERY,B. United States, residing at Galva, in the county of Henry and State of Illinois, have invented certain new and usefullmprovements 1n Tripods for Support ing Lighting-Fixtures; and I do hereby declare the followin to be'a full, clear, and exact description 0 the-invention, such as will enable others skilled in the art to which it 1appertains to make and use the same.

invention relates to tripods for supporting electric light or other fixtures.

Ithas for its object to lessen the labor of hanging such fixtures and to provide for the ready adjustment "thereof so that they willhang plumb.

The invention consists in the features of construction and combinations of parts hereinafter described and specified in the'claims.

In the accompanying drawings, illustratembodiment of my inven- 1 is',an elevation of an electrolier'or chandelier secured to a ceiling by .one of my tripods, the canopy being withdrawn to reveal the tripod. Fig. 2 is a deiion Figure tailed plan View of the tripod, and 3 is a central sectional view thereof.

or other material.

particularly to the draw- Referring more the stem ofthe electrolier ings, 1 designates and 2 the canopy Said tripod is made in two parts, one comprising a plate 3 having curved Eart s 3" converging'towards each other andihe other consisting of a smaller plates having" curved diverging arms 3 spaced similarly to the engage the inner faces of the arms 3 and are secured thereto by screws 4. The passages 5 for said screws in the arms 3 are larger than the shanks of-the screws for the purpose of adjustment. The plate 3 has a screw threaded passage 6 through of the electrolier. I

.Practice has shown that when a fixture is secured to a plastered ceiling it will nearly always be out of plumb owing to unevenness in the surface of the plaster. When the ordinary one piece tripod is used the only wayto remedythis is to loosen the screws holding the tripodto the ceilingand wedge it down with washers or pieces of cardboard best gives only a botch job when finished:

When'my tripod is used, as soon as the fixture is secured to the ceiling, the ad ustmg' for covering the tripod 3. v

The arms 3, normally verg ng, arms,

it to receive the stem the corresponding arms of said plates together This requires time and at screws at may be loosened to permit the fixture to plumb itself or be plumbed, after which said screws may be tightened, making a good firm job.

If desired, the upper or main part of the tripod may be screwed to the ceiling or wall tripod screwed upon it, may haveits 'arms lnserted between those of the main part and turned until the screws 4 can be put in and tightened. This also makes ,'it convenient if the fixture has to be taken. down for repairs as none of the screws that hold it to the ceiling have'to be disturbed.

I have noticed with the old style tripod first and the electrolier. or bracket having the smaller part of the that the wiremen fasten the fixture to it before installing-it. When this is done the starting of the screws through the plaster will. cause said plaster to crumble and fall down within the canopy which has been dropped down on the stem, as illustrated for instance in Fig. 1,1to permit access to said screws. Then, when the canopy is slipped up into place, the plaster will lodge between said canopy and stem and scratch the casing of the latter, removing the lacquer and causing it soon to tarnish. By employing my tripod and screwing the upper or main part on first old style of tripod can be put up first but in screwing the stem of the fixture into it at least six turns are required and the wires in said stem are liable to become short circuited.

I claim 1 p 1.' A tripod for the purpose specified comprising an upper and a lower plate, said. up-

,latehaving a plurality of curved conthe lower plate having a like number of similarly curved diverging arms the arms of the lower plate being arranged above and "supported upon the arms of the upper plate, and means to adjustably secure per a lower plate, said upthis can-be avoided. Of course the\ per plate having a plurality of curved converging arms provided with enlarged openings therein, the lower platehaving a like number of similarly curved diverging arms, the arms-of the lower plate being arranged above and supported upon the arms of the upper plate, and screws passed through said enlarged openings in the lower arms and engaged with the upper arms.

4:. A tripod for the purpose specified, comprising an upper and'a lower plate, said upper plate having a plurality of curved converging arms, the lower plate having a like number of similarly curved diverging arms,

the arms of the lower plate being arranged above and supported upon the arms of the upper plate, the spaces between the arms on the upper platebeing Wider. than the arms on the lower plate whereby said plates may EDWVIN A. EMERY. Witnesses: I

WT'S. MGCLINTOOK, RAYL. PALMER. 

